9. How to backup and restore proxmox vms

   I am running proxmox on my own homelab server, so I don't care that much about downtime, I can use stop mode to backup my vms without any problem. So, to backup and restore vm on another machine, just follow these steps:

   1. stop vm
   2. vzdump $vmid [--dumpdir /mnt/backup] # default …

   read more

10. Ubuntu 20.04 Bluetooth headphone problems

    From my experience, the wireless Bluetooth driver in Ubuntu is not written very well. I have met some severe problems with it.

    For example, one time I noticed one very strange problem: youtube videos do not play in Chrome, but you can drag the progress bar to anywhere, the image …

    read more

11. Some of my projects, tools and scripts

    HTTP traffic index engine

    • design and implement an HTTP request hash algorithm to filter similar HTTP request(from penetration testing perspective)
    • design and implement a web page structural clustering algorithm to filter similar web page(from penetration testing perspective)
    • design and implement a crawler-based on these two algorithms to index …

    read more

12. sshfs Transport endpoint is not connected

    I have a notebook running Ubuntu 18.04 and a raspberry pi(4B with 4GB ram, which is a fantastic version of raspberry pi), both are on 7x24. Because capacity of the harddisk in the notebook is not large(only 64GB), I use sshfs to mount one hard disk(1TB …

    read more

13. Why use return only to construct event from financial time series is a bad idea

    It is a bad idea to construct events from financial time series by return. The following is an example:

    # au
    
    i = 30
    delta = tmpdf.close.shift(-i) - tmpdf.close
    delta = delta[market_open_and_close_time_range.not_include_these(delta.index)]
    delta = delta[np.abs(delta)>0.2]
    ts = pd.Series(list(delta.index))
    x = group_ts_by_gap …

    read more

14. A minor Ubuntu 18.04 bluetooth problem

    Several days ago, my 2.4G mouse is broken because the usb receiver can not work properly, so I bought another bluetooth/2.4G mouse on taobao, which costs me only 30 yuan(5 dollars).But there is a small problem with the bluetooth connection.Sometimes the connection just dies …

    read more

15. Blog on Github with pelican

    It has been a long time since i wrote blogs. I think it is time to write some thoughts down and practice my English.

    It's very easy to blog on Github with pelican.

    1. create a repository on github like this: cainiaocome.github.io, replace cainiaocome with your username
    2. pip install …

    read more

⇇ « Page 2 / 2